U.S. patent application number 13/939826 was filed with the patent office on 2014-01-23 for managed fiber connectivity systems.
The applicant listed for this patent is ADC Telecommunications, Inc., Tyco Electronics UK Ltd. Invention is credited to David J. Anderson, Stephen Lambourn.
Application Number | 20140023326 13/939826 |
Document ID | / |
Family ID | 49916552 |
Filed Date | 2014-01-23 |
United States Patent
Application |
20140023326 |
Kind Code |
A1 |
Anderson; David J. ; et
al. |
January 23, 2014 |
MANAGED FIBER CONNECTIVITY SYSTEMS
Abstract
A communications connection system includes an SC fiber optic
connector including a storage device having memory configured to
store physical layer information. The storage device also includes
electrical contacts or an RFID antenna coil connected to the memory
for transmitting information to a management system. The
communications connection system also includes a fiber optic
adapter module having one or more media reading interfaces. Each
media reading interface is configured to read physical layer
information stored on one of the fiber optic connectors received at
the adapter module. Example media reading interfaces include
electrical contacts and RFID readers.
Inventors: |
Anderson; David J.;
(Bloomington, MN) ; Lambourn; Stephen; (Swindon,
GB) |
|
Applicant: |
Name |
City |
State |
Country |
Type |
Tyco Electronics UK Ltd
ADC Telecommunications, Inc. |
Swindon
Berwyn |
PA |
GB
US |
|
|
Family ID: |
49916552 |
Appl. No.: |
13/939826 |
Filed: |
July 11, 2013 |
Related U.S. Patent Documents
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Application
Number |
Filing Date |
Patent Number |
|
|
61670366 |
Jul 11, 2012 |
|
|
|
Current U.S.
Class: |
385/78 ;
385/77 |
Current CPC
Class: |
G06K 7/10366 20130101;
G02B 6/3825 20130101; G02B 6/3831 20130101; G02B 6/3874 20130101;
G06K 2007/10485 20130101; G02B 6/381 20130101; G02B 6/3887
20130101; G02B 6/3895 20130101 |
Class at
Publication: |
385/78 ;
385/77 |
International
Class: |
G02B 6/38 20060101
G02B006/38 |
Claims
1. A fiber optic connector configured to be received at an optical
adapter, the fiber optic connector comprising: a body configured to
surround an optical fiber that extends longitudinally through the
body, the body having a cavity accessible through a slot defined in
the body; and a storage device sealed within the cavity defined in
the body, the storage device also including a transmission member
for communicating information from memory to a data management
system; wherein the slot is sized to receive the storage device
edge-wise.
2. The fiber optic connector of claim 1, wherein the slot opens
from a front of the body.
3. The fiber optic connector of claim 1, wherein the slot opens
from a rear of the body.
4. The fiber optic connector of claim 1, wherein the storage device
includes an RFID tag.
5. The fiber optic connector of claim 1, wherein the storage device
includes a circuit board and EEPROM.
6-36. (canceled)
37. The fiber optic connector of claim 1, wherein the body includes
an outer body slidable relative to an inner body, the inner body
holding the optical fiber and the outer body defining a gripping
portion.
38. The fiber optic connector of claim 37, wherein the fiber optic
connector includes an SC connector.
39. The fiber optic connector of claim 1, wherein the optical fiber
is disposed in a ferrule coupled to the body.
40. The fiber optic connector of claim 1, further comprising a plug
piece coupled to the body to close the storage device within the
cavity.
41. The fiber optic connector of claim 40, wherein the plug piece
is welded to the body.
42. The fiber optic connector of claim 40, wherein the plug piece
is glued to the body.
43. The fiber optic connector of claim 40, wherein the plug piece
is overmolded to the body.
44. The fiber optic connector of claim 1, wherein the body includes
shelves that at least partially define the cavity, and wherein the
storage device seats on the shelves when disposed in the
cavity.
45. The fiber optic connector of claim 44, wherein the body
includes an outer body slidable relative to an inner body, the
inner body defining a longitudinally extending gap that aligns with
a gap between the shelves.
46. The fiber optic connector of claim 1, wherein the body includes
a latch for securing the fiber optic connector to an adapter.
47. The fiber optic connector of claim 46, wherein the fiber optic
connector includes an LC connector.
48. The fiber optic connector of claim 46, wherein the body
includes a front housing piece and a rear housing piece, the front
housing piece including the latch and the rear housing piece
defining the slot.
49. The fiber optic connector of claim 1, wherein the slot is
overmolded shut.
50. The fiber optic connector of claim 1, wherein a boot is mounted
to the body to cover the slot.
51. The fiber optic connector of claim 1, wherein the body is a
single-piece body.
Description
CROSS-REFERENCE TO RELATED APPLICATION
[0001] The present patent application claims the benefit of U.S.
Provisional Patent Application Ser. No. 61/670,366, filed Jul. 11,
2012, which application is hereby incorporated by reference in its
entirety.
BACKGROUND
[0002] In communications infrastructure installations, a variety of
communications devices can be used for switching, cross-connecting,
and interconnecting communications signal transmission paths in a
communications network. Some such communications devices are
installed in one or more equipment racks to permit organized,
high-density installations to be achieved in a limited space.
[0003] Communications devices can be organized into communications
networks, which typically include numerous logical communication
links between various items of equipment. Often a single logical
communication link is implemented using several pieces of physical
communication media. For example, a logical communication link
between a computer and an inter-networking device such as a hub or
router can be implemented as follows. A first cable connects the
computer to a jack mounted in a wall. A second cable connects the
wall-mounted jack to a port of a patch panel, and a third cable
connects the inter-networking device to another port of a patch
panel. A "patch cord" cross connects the two together. In other
words, a single logical communication link is often implemented
using several segments of physical communication media.
[0004] Network management systems (NMS) are typically aware of
logical communication links that exist in a communications network,
but typically do not have information about the specific physical
layer media (e.g., the communications devices, cables, couplers,
etc.) that are used to implement the logical communication links.
Indeed, NMS systems typically do not have the ability to display or
otherwise provide information about how logical communication links
are implemented at the physical layer level.
SUMMARY
[0005] The present disclosure relates to optical adapters and
optical connectors that provide physical layer management
capabilities. In accordance with certain aspects, the disclosure
relates to SC-type optical adapters and SC-type optical
connectors.
[0006] In some implementations, a fiber optic connector includes an
inner body, an outer body, and a storage device. The inner body is
configured to retain a ferrule that extends longitudinally through
the inner body. The inner body defines a recess that extends
longitudinally along an exterior surface of the inner body. The
outer body slideably received about the inner body. The outer body
defines a cut-out extending rearwardly from a front of the outer
body. The cut-out is aligned with the recess defined in the inner
body. The storage device is disposed in the recess of the inner
body. At least a portion of the storage device extends from the
recess at least partially through the cut-out of the outer body.
The storage device includes memory configured to store physical
layer information. The storage device also includes at least one
contact member that is electrically connected to the memory.
[0007] In certain implementations, a front edge of the storage
device is disposed flush with a front edge of the inner body. In
other implementations, a front edge of the storage device is
disposed rearwardly offset with a front edge of the inner body.
[0008] A fiber optic adapter module includes a housing, a cover,
and a media reading interface. The housing defines at least one
passageway extending between the front and the rear to define first
and second ports. The housing is configured to retain a fiber optic
connector at each port. The housing also defines at least a first
opening leading through a first end wall to the passageway. The
cover is configured to couple to the housing at the first end to
cover the first opening. The cover and the housing cooperate to
define an end wall at the first end of the housing. The cover
defines a majority of the end wall. The cover defines at least one
slot that extends along a central axis of the cover. The slot also
extends through the cover to provide access between the passageway
and an exterior of the housing when the cover is mounted to the
housing. The first media reading interface is positioned in the
cover and has at least a first contact location and a second
contact location. The first media reading interface is configured
so that the second contact location is accessible from within the
passageway and the first contact locations is accessible through
the slot from the exterior of the housing when the cover is coupled
to the housing.
[0009] In accordance with other aspects, a cover arrangement for
mounting to an optical adapter includes a cover body and at least a
first contact member of a first media reading interface. The cover
body defines at least a first slot that extends in a
forward-rearward direction along a central longitudinal axis of the
cover body. The first slot extends through two planar surfaces of
the cover. The first contact member of the first media reading
interface is disposed in the first slot. The first contact member
has a first moveable section and a second moveable section. The
first moveable section is configured to extend through the first
slot past a first of the planar surfaces. The second moveable
section is configured to extend through the first slot past a
second of the planar surfaces.
[0010] A variety of additional inventive aspects will be set forth
in the description that follows. The inventive aspects can relate
to individual features and to combinations of features. It is to be
understood that both the forgoing general description and the
following detailed description are exemplary and explanatory only
and are not restrictive of the broad inventive concepts upon which
the embodiments disclosed herein are based.
BRIEF DESCRIPTION OF THE DRAWINGS
[0011] The accompanying drawings, which are incorporated in and
constitute a part of the description, illustrate several aspects of
the present disclosure. A brief description of the drawings is as
follows:
[0012] FIG. 1 is a block diagram of one embodiment of a
communications management system that includes PLI functionality as
well as PLM functionality in accordance with aspects of the present
disclosure;
[0013] FIG. 2 is a block diagram of one high-level example of a
coupler assembly and media reading interface that are suitable for
use in the management system of FIG. 1 in accordance with aspects
of the present disclosure;
[0014] FIG. 3 illustrates a first example implementation of a
connector system including a first example optical adapter and
fiber optic connectors having PLI functionality as well as PLM
functionality;
[0015] FIG. 4 is a front perspective view of an SC-type optical
connector on which a storage device is flush-mounted to provide PLI
and PLM functionality;
[0016] FIG. 5 is an axial cross-sectional view of the optical
connector of FIG. 4;
[0017] FIG. 6 is an axial cross-sectional view of the connector
system of FIG. 3;
[0018] FIG. 7 is a top plan view of an example storage device
suitable for mounting to any of the optical connectors disclosed
herein;
[0019] FIG. 8 is a side elevational view of the storage device of
FIG. 7;
[0020] FIG. 9 illustrates one example contact member of a media
reading interface suitable for use with any optical adapter
disclosed herein;
[0021] FIG. 10 illustrates a second example implementation of an
SC-type optical connector suitable for use in a system having PLI
functionality as well as PLM functionality;
[0022] FIG. 11 is an axial cross-sectional view of another example
implementation of an SC-type adapter receiving two of the SC
connectors of FIG. 10;
[0023] FIG. 12 is an enlarged view of the front of the SC optical
connector shown in FIG. 10 with another example storage device
mounted thereto;
[0024] FIG. 13 is a front perspective view of an example SC optical
connector including an embedded storage device;
[0025] FIG. 14 shows the storage device and a cover exploded from
the SC optical connector of FIG. 13;
[0026] FIG. 15 is a front end view of the SC-type optical connector
of FIG. 13;
[0027] FIG. 16 is a rear perspective view of an example LC
connector having a rear slot for receiving a memory storage device;
and
[0028] FIG. 17 is a front perspective view of another example LC
connector having a rear slot for receiving a memory storage
device.
DETAILED DESCRIPTION
[0029] Reference will now be made in detail to exemplary aspects of
the present disclosure that are illustrated in the accompanying
drawings. Wherever possible, the same reference numbers will be
used throughout the drawings to refer to the same or like
parts.
[0030] Reference will now be made in detail to exemplary aspects of
the present disclosure that are illustrated in the accompanying
drawings. Wherever possible, the same reference numbers will be
used throughout the drawings to refer to the same or like
parts.
[0031] In accordance with some aspects of the disclosure, an
example communications and data management system includes at least
part of a communications network along which communications signals
pass. Media segments connect equipment of the communications
network. Non-limiting examples of media segments include optical
cables, electrical cables, and hybrid cables. This disclosure will
focus on optical media segments. The media segments may be
terminated with optical plug connectors, media converters, or other
optical termination components.
[0032] In accordance with aspects of the disclosure, the
communications and data management system provides physical layer
information (PLI) functionality as well as physical layer
management (PLM) functionality. As the term is used herein, "PLI
functionality" refers to the ability of a physical component or
system to identify or otherwise associate physical layer
information with some or all of the physical components used to
implement the physical layer of the system. As the term is used
herein, "PLM functionality" refers to the ability of a component or
system to manipulate or to enable others to manipulate the physical
components used to implement the physical layer of the system
(e.g., to track what is connected to each component, to trace
connections that are made using the components, or to provide
visual indications to a user at a selected component).
[0033] As the term is used herein, "physical layer information"
refers to information about the identity, attributes, and/or status
of the physical components used to implement the physical layer of
the communications system. Physical layer information of the
communications system can include media information, device
information, and location information. Media information refers to
physical layer information pertaining to cables, plugs, connectors,
and other such physical media. Non-limiting examples of media
information include a part number, a serial number, a plug type, a
conductor type, a cable length, cable polarity, a cable
pass-through capacity, a date of manufacture, a manufacturing lot
number, the color or shape of the plug connector, an insertion
count, and testing or performance information. Device information
refers to physical layer information pertaining to the
communications panels, inter-networking devices, media converters,
computers, servers, wall outlets, and other physical communications
devices to which the media segments attach. Location information
refers to physical layer information pertaining to a physical
layout of a building or buildings in which the network is
deployed.
[0034] In accordance with some aspects, one or more of the
components (e.g., media segments, equipment, etc.) of the
communications network are configured to store physical layer
information pertaining to the component as will be disclosed in
more detail herein. Some components include media reading
interfaces that are configured to read stored physical layer
information from the components. The physical layer information
obtained by the media reading interface may be communicated over
the network for processing and/or storage.
[0035] FIG. 1 is a block diagram of one example implementation of a
communications management system 200 that includes PLI
functionality as well as PLM functionality. The management system
200 comprises a plurality of connector assemblies 202 (e.g., patch
panels, blades, optical adapters, electrical jacks, media
converters, transceivers, etc.), connected to an IP network 218.
Each connector assembly 202 includes one or more ports 204, each of
which is configured to receive a media segment for connection to
other media segments or equipment of the management system 200. For
the purposes of this disclosure, optical connector assemblies 202
and optical media segments will be described. In other
implementations, however, electrical connector assemblies and media
segments may be used.
[0036] At least some of the connector assemblies 202 are designed
for use with optical cables that have physical layer information
stored in or on them. The physical layer information is configured
to be read by a programmable processor 206 associated with one or
more connector assemblies 202. In general, the programmable
processor 206 communicates with memory of an optical cable using a
media reading interface 208. In some implementations, each of the
ports 204 of the connector assemblies 202 includes a respective
media reading interface 208. In other implementations, a single
media reading interface 208 may correspond to two or more ports
204.
[0037] In FIG. 1, four example types of connector assembly
configurations 210, 212, 214, and 215 are shown. In the first
connector assembly configuration 210, each connector assembly 202
includes its own respective programmable processor 206 and its own
respective network interface 216 that is used to communicatively
couple that connector assembly 202 to an Internet Protocol (IP)
network 218. In the second type of connector assembly configuration
212, connector assemblies 202 are grouped together in proximity to
each other (e.g., in a rack, rack system, patch panel, chassis, or
equipment closet). Each connector assembly 202 of the group
includes its own respective programmable processor 206. However,
not all of the connector assemblies 202 include their own
respective network interfaces 216.
[0038] In the third type of connector assembly configuration 214,
some of the connector assemblies 202 (e.g., "masters") in the group
include their own programmable processors 206 and network
interfaces 216, while others of the connector assemblies 202 (e.g.,
slaves") do not include their own programmable processors 206 or
network interfaces 216. Each programmable processor 206 is able to
carry out the PLM functions for both the connector assembly 202 of
which it is a part and any of the slave connector assemblies 202 to
which the master connector assembly 202 is connected via the local
connections.
[0039] In the fourth type of connector assembly configuration 215,
each of the connector assemblies 202 in a group includes its own
"slave" programmable processors 206. Each slave programmable
processor 206 is configured to manage the media reading interfaces
208 to determine if physical communication media segments are
attached to the port 204 and to read the physical layer information
stored in or on the attached physical communication media segments
(if the attached segments have such information stored therein or
thereon). Each of the slave programmable processors 206 in the
group also is communicatively coupled to a common "master"
programmable processor 217. The master processor 217 communicates
the physical layer information read from by the slave processors
206 to devices that are coupled to the IP network 218. For example,
the master programmable processor 217 may be coupled to a network
interface 216 that couples the master processor 217 to the IP
network 218.
[0040] In accordance with some aspects, the communications
management system 200 includes functionality that enables the
physical layer information captured by the connector assemblies 202
to be used by application-layer functionality outside of the
traditional physical-layer management application domain. For
example, the management system 200 may include an aggregation point
220 that is communicatively coupled to the connector assemblies 202
via the IP network 218. The aggregation point 220 can be
implemented on a standalone network node or can be integrated along
with other network functionality.
[0041] The aggregation point 220 includes functionality that
obtains physical layer information from the connector assemblies
202 (and other devices) and stores the physical layer information
in a data store. The aggregation point 220 also can be used to
obtain other types of physical layer information. For example, this
information can be provided to the aggregation point 220, for
example, by manually entering such information into a file (e.g., a
spreadsheet) and then uploading the file to the aggregation point
220 (e.g., using a web browser) in connection with the initial
installation of each of the various items. Such information can
also, for example, be directly entered using a user interface
provided by the aggregation point 220 (e.g., using a web
browser).
[0042] The management system 200 also may include a network
management system (NMS) 230 includes PLI functionality 232 that is
configured to retrieve physical layer information from the
aggregation point 220 and provide it to the other parts of the NMS
230 for use thereby. The NMS 230 uses the retrieved physical layer
information to perform one or more network management functions. In
certain implementations, the NMS 230 communicates with the
aggregation point 220 over the IP network 218. In other
implementations, the NMS 230 may be directly connected to the
aggregation point 220.
[0043] An application 234 executing on a computer 236 also can use
the API implemented by the aggregation point 220 to access the PLI
information maintained by the aggregation point 220 (e.g., to
retrieve such information from the aggregation point 220 and/or to
supply such information to the aggregation point 220). The computer
236 is coupled to the IP network 218 and accesses the aggregation
point 220 over the IP network 218.
[0044] One or more inter-networking devices 238 used to implement
the IP network 218 include physical layer information (PLI)
functionality 240. The PLI functionality 240 of the
inter-networking device 238 is configured to retrieve physical
layer information from the aggregation point 220 and use the
retrieved physical layer information to perform one or more
inter-networking functions. Examples of inter-networking functions
include Layer 1, Layer 2, and Layer 3 (of the OSI model)
inter-networking functions such as the routing, switching,
repeating, bridging, and grooming of communication traffic that is
received at the inter-networking device.
[0045] Additional details pertaining to example communications
management system 200 can be found in U.S. application Ser. No.
13/025841, filed Feb. 11, 2011, and titled "Managed Fiber
Connectivity Systems," the disclosure of which is hereby
incorporated herein by reference.
[0046] FIG. 2 is a schematic diagram of one example connector
assembly 110 configured to collect physical layer information from
a connector arrangement 120 terminating a media segment 122. The
example connector assembly 120 of FIG. 2 is configured to connect
segments of optical physical communications media in a physical
layer management system. The connector assembly 110 includes a
fiber optic adapter defining at least one connection opening 111
having a first port end 112 and a second port end 114. A sleeve
(e.g., a split sleeve) 103 is arranged within the connection
opening 111 of the adapter 110 between the first and second port
ends 112, 114. Each port end 112, 114 is configured to receive a
connector arrangement as will be described in more detail
herein.
[0047] A first example segment of optical physical communication
media includes a first optical fiber 122 terminated by a first
connector arrangement 120. A second example segment of optical
physical communication media includes a second optical fiber 132
terminated by a second connector arrangement 130. The first
connector arrangement 120 is plugged into the first port end 112
and the second connector arrangement 130 is plugged into the second
port end 114. Each fiber connector arrangement 120, 130 includes a
ferrule 124, 134 through which optical signals from the optical
fiber 122, 132, respectively, pass.
[0048] The ferrules 124, 134 of the connector arrangements 120, 130
are aligned by the sleeve 103 when the connector arrangements 120,
130 are inserted into the connection opening 111 of the adapter
110. Aligning the ferrules 124, 134 provides optical coupling
between the optical fibers 122, 132. In some implementations, each
segment of optical physical communication media (e.g., each optical
fiber 122, 132) carries communication signals. The aligned ferrules
124, 134 of the connector arrangements 120, 130 create an optical
path along which the communication signals may be carried.
[0049] In some implementations, the first connector arrangement 120
may include a storage device 125 that is configured to store
physical layer information (e.g., an identifier and/or attribute
information) pertaining to the segment of physical communications
media (e.g., the first connector arrangement 120 and/or the fiber
optic cable 122 terminated thereby). In some implementations, the
connector arrangement 130 also includes a storage device 135 that
is configured to store information (e.g., an identifier and/or
attribute information) pertaining to the second connector
arrangement 130 and/or the second optic cable 132 terminated
thereby.
[0050] In one implementation, each of the storage devices 125, 135
is implemented using an EEPROM (e.g., a PCB surface-mount EEPROM).
In other implementations, the storage devices 125, 135 are
implemented using other non-volatile memory device. Each storage
device 125, 135 is arranged and configured so that it does not
interfere or interact with the communications signals communicated
over the media segments 122, 132.
[0051] In accordance with some aspects, the adapter 110 is coupled
to at least a first media reading interface 116. In certain
implementations, the adapter 110 also is coupled to at least a
second media interface 118. In some implementations, the adapter
110 is coupled to multiple media reading interfaces. In certain
implementations, the adapter 110 includes a media reading interface
for each port end defined by the adapter 110. In other
implementations, the adapter 110 includes a media reading interface
for each connection opening 111 defined by the adapter 110. In
still other implementations, the adapter 110 includes a media
reading interface for each connector arrangement that the adapter
110 is configured to receive. In still other implementations, the
adapter 110 includes a media reading interface for only a portion
of the connector arrangement that the adapter 110 is configured to
receive.
[0052] In some implementations, at least the first media reading
interface 116 is mounted to a printed circuit board 115. In the
example shown, the first media reading interface 116 of the printed
circuit board 115 is associated with the first port end 112 of the
adapter 110. In some implementations, the printed circuit board 115
also can include the second media reading interface 118. In one
such implementation, the second media reading interface 1818 is
associated with the second port end 114 of the adapter 110.
[0053] The printed circuit board 115 of the connector assembly 110
can be communicatively connected to one or more programmable
processors (e.g., processors 216 of FIG. 1) and/or to one or more
network interfaces (e.g., network interfaces 216 of FIG. 1). The
network interface may be configured to send the physical layer
information to a physical layer management network (e.g., see IP
network 218 of FIG. 1). In one implementation, one or more such
processors and interfaces can be arranged as components on the
printed circuit board 115. In another implementation, one or more
such processor and interfaces can be arranged on separate circuit
boards that are coupled together. For example, the printed circuit
board 115 can couple to other circuit boards via a card edge type
connection, a connector-to-connector type connection, a cable
connection, etc.
[0054] When the first connector arrangement 120 is received in the
first port end 112 of the adapter 110, the first media reading
interface 1816 is configured to enable reading (e.g., by the
processor) of the information stored in the storage device 125. The
information read from the first connector arrangement 120 can be
transferred through the printed circuit board 115 to a physical
layer management network, e.g., network 218 of FIG. 1, etc. When
the second connector arrangement 130 is received in the second port
end 114 of the adapter 110, the second media reading interface 118
is configured to enable reading (e.g., by the processor) of the
information stored in the storage device 135. The information read
from the second connector arrangement 130 can be transferred
through the printed circuit board 115 or another circuit board to
the physical layer management network.
[0055] In some such implementations, the storage devices 125, 135
and the media reading interfaces 116, 118 each comprise three (3)
leads--a power lead, a ground lead, and a data lead. The three
leads of the storage devices 125, 135 come into electrical contact
with three (3) corresponding leads of the media reading interfaces
116, 118 when the corresponding media segment is inserted in the
corresponding port. In certain example implementations, a two-line
interface is used with a simple charge pump. In still other
implementations, additional leads can be provided (e.g., for
potential future applications). Accordingly, the storage devices
125, 135 and the media reading interfaces 116, 118 may each include
four (4) leads, five (5) leads, six (6) leads, etc.
[0056] FIGS. 4-5 illustrate an example implementation of a
connector system 300 that can be utilized on a connector assembly
(e.g., a communications panel) having PLI functionality as well as
PLM functionality. One example connector assembly on which the
connector system 300 can be implemented is a bladed chassis.
Examples of bladed chassis can be found in U.S. application Ser.
No. 13/025,750, filed Feb. 11, 2011, and titled "Communications
Bladed Panel System," the disclosure of which is hereby
incorporated herein by reference in its entirety. The connector
system 300 includes at least one example communications coupler
assembly 310 and at least two connector arrangements 320.
[0057] The communications coupler assembly 310 is configured to be
mounted to a connector assembly, such as a communications blade or
a communications panel. One or more connector arrangements 320,
which each terminate at least one segment of communications media
325 (FIG. 4), are configured to communicatively couple to other
segments of physical communications media at the coupler assembly
310 (e.g., see FIG. 3). Accordingly, communications data signals
carried by a media segment 325 terminated by a first connector
arrangement 320 can be propagated to another media segment (e.g.,
terminated by a second connector arrangement 320) through the
communications coupler assembly 310.
[0058] In accordance with some aspects, each communications coupler
assembly 310 is configured to form a single link between segments
of physical communications media. For example, each communications
coupler assembly 310 can define a single passage at which a first
connector arrangement 320A is coupled to a second connector
arrangement 320B (see FIG. 3). In accordance with other aspects,
however, each communications coupler assembly 310 is configured to
form two or more links between segments 325 of physical
communications media.
[0059] In accordance with some aspects, each connector arrangement
320 is configured to terminate a single segment of physical
communications media. For example, each connector arrangement 320
can include a single optical connector that terminate a single
optical fiber 325 or a single electrical conductor. In one example
implementation, each connector arrangement 320 includes a single
SC-type fiber optic connector 320 that terminates a single optical
fiber 325 (see FIG. 4). In other implementations, the connector 320
can be an LC-type, an ST-type, an FC-type, an LX.5-type, etc.
[0060] FIG. 4 is a front perspective view an example fiber optic
connector arrangement 320 including an SC-type connector. The
connector 320 includes an outer body 321 surrounding an inner body
322. The inner body 322 holds a ferrule 323, which retains an
optical fiber 325. The outer body 321 is configured to move
relative to the inner body 322 along a longitudinal axis L of the
ferrule 323. The ferrule 323 also is configured to move within the
inner body 322 against a spring bias. A boot 324 extends rearwardly
from the outer connector body 321 to provide bend protection to the
optical fiber 325. For example, the boot 324 may be secured between
the outer body 321 and the inner body 322.
[0061] The outer housing 321 defines two slots 329 on opposite
sides thereof through which raised portions of the inner housing
322 are visible. The outer housing 321 also defines a key 328
located on a side perpendicular to the sides containing the slots
329. The key 328 is configured to engage a keyway of coupler
assembly 310 to properly position the connector 320 at a port of
the coupler assembly 310. The outer body 321 also includes a
knurled handle or other grip section at a rear of the outer body
321. In certain implementations, the grip section defines a
textured surface (e.g., ridges).
[0062] Additional details regarding an example connector 320 can be
found in U.S. Pat. No. 5,317,663, issued May 31, 1994 to Beard et
al., and titled "One-Piece SC Adapter," the disclosure of which is
hereby incorporated herein by reference in its entirety.
[0063] Each connector arrangement 320 is configured to store
physical layer information. For example, a storage device 330
(FIGS. 7 and 8) may be installed on or in the fiber optic connector
320. One example storage device 330 includes a printed circuit
board 331 on which memory circuitry can be arranged. Electrical
contacts 332 also may be arranged on the printed circuit board 331
for interaction with a media reading interface of the
communications coupler assembly 310 (described in more detail
herein). In one example implementation, the storage device 330
includes an EEPROM circuit 333 arranged on the printed circuit
board 331. In other implementations, however, the storage device
330 can include any suitable type of non-volatile memory.
[0064] The storage device 330 shown in FIGS. 7 and 8 includes
generally planar contacts 332 positioned on a generally planar
circuit board 331. In the example shown, the contacts extend over
an elongated dimension of the board 331. In other implementations,
however, the board 331 may have a square geometry or the contacts
may be otherwise arranged on the board. Memory 333 (FIG. 8) of the
storage device 330, which is located on the non-visible side of the
board in FIGS. 4 and 7, is accessed by engaging the tops of the
contacts 332 with one or more electrically conductive contact
members of a media reading interface (e.g., media reading interface
116 of FIG.2). In certain implementations, the contact member
slides or wipes across the memory contacts 332.
[0065] In some implementations, the contacts 332 have the same
length. In other implementations, one or more of the contacts 332
may have different lengths. In some implementations, the contacts
332 have the same shape. For example, in some implementation, the
contacts 332 may be generally rounded at one or both ends of the
contact members. In other implementations, one or more of the
contacts 332 may have different shapes. For example, in certain
implementations, some of the contacts 332 are straight and some of
the contacts 332 are generally L-shaped. In one example
implementation, the L-shaped contacts may be longer than the
rounded end contacts. In some implementations, the contacts 332 may
be positioned in a staggered configuration. In other
implementations, the contacts 332 may be laterally aligned.
[0066] As shown in FIGS. 4 and 5, the inner body 322 of the
connector 320 may define a recessed section 326 in which the
storage device 330 may be disposed. In some implementations, the
cavity 326 faces away from the key 328 of the outer body 321. In
another implementation, the cavity 326 may be provided on the same
side as the key 328. In some implementations, the cavity 326 is
formed at a front, center location of the connector 320. For
example, the cavity 326 may open to a front side of the connector
320. In some such implementations, a front edge of the circuit
board 331 may be disposed flush with a front edge of the inner body
322 when the storage device 330 is mounted at the cavity 326. In
other implementations, the cavity 326 may be formed at a front
location laterally offset from the center.
[0067] In the example shown, the cavity 326 is formed by a
depression in a side of the inner body 322 (e.g., the side opposite
the key 328). The depression is generally sized and configured to
receive the printed circuit board 331 of the storage device 330. In
some implementations, the cavity 326 has a stepped configuration to
facilitate positioning of the storage device 330. For example, a
well may be formed at one location in the depression. The well is
sufficiently deep to accommodate an EEPROM circuit 333 coupled to
one side of the circuit board 331. In some implementations, the
depression may be sufficiently deep to enable electrical contacts
332 provided on the circuit board 331 to be generally flush with
the outer surface of the inner body 322.
[0068] In other implementations, however, the depression is shallow
so that a top of the printed circuit board 331 extends outwardly
from the inner body 322. In such implementations, the outer body
321 may define a cut-out 327 that is sized to accommodate the
storage device 330 (e.g., see FIGS. 4 and 5). The cut-out 327
aligns with the depression 326 in the inner body so that the
cut-out 327 accommodates the storage device 330. For example, the
cut-out 327 may be formed by removing a front, center portion of
the outer body 321 to enable the storage device 330 to extend
through the outer body 321. In certain implementations, the cut-out
327 extends sufficiently rearward to accommodate rearward movement
of the storage device 330 relative to the outer body 321 (e.g.,
when the inner body 322 moves relative to the outer body 321).
[0069] FIGS. 3 and 6 show one example implementation of a
communications coupler assembly 310 implemented as a fiber optic
adapter. The example communications coupler assembly 310 includes
an adapter housing 311 defining one or more passages configured to
align and interface two or more fiber optic connectors 320. In
other example implementations, however, one or more passages can be
configured to communicatively couple together a fiber optic
connector 320 with a media converter (not shown) to convert the
optical data signals into electrical data signals, wireless data
signals, or other such data signals. In still other
implementations, the communications coupler assembly 310 can
include an electrical termination block that is configured to
receive punch-down wires, electrical plugs (e.g., for electrical
jacks), or other types of electrical connectors.
[0070] The example adapter housing 311 includes opposing side walls
interconnected by at least one end wall. The side walls and end
walls each extend between a front end and a rear end. The adapter
housing 311 defines one or more axial passages extending between
the front and rear ends. Each passage defines a first port 313 and
a second port 314 at the front and rear ends, respectively. Each
port 313, 314 is configured to receive a connector 320. In the
example shown, the adapter housing 311 defines a single axial
passage. In other implementations, however, the adapter housing 311
may define one, two, three, six, eight, ten, twelve, sixteen, or
even more axial passages.
[0071] Sleeves (e.g., split sleeves) 319 may be positioned within
the axial passages to receive and align the ferrules 323 of fiber
optic connectors 320 (see FIG. 6). In some implementations, the
sleeve 319 is monolithically formed with the adapter housing 311.
For example, in some implementations, one of the end walls of the
adapter housing 311 defines an opening 312 leading to the axial
passage (see FIG. 3). The opening 312 in the end wall may enable an
injection molding machine access to the axial passage to form the
sleeve 319. A cover 315 may be coupled (e.g., latched, welded,
fastened, adhered, etc.) to the adapter housing 311 to close the
opening 312 and protect the interior of the adapter housing 311. In
other implementations, the sleeve 319 is formed separately from the
adapter housing 311 and subsequently inserted into the axial
passage through the opening 312. In still other implementations,
neither of the end walls defines an opening 312. Rather, the sleeve
319 may be inserted into the axial passage through one of the ports
313, 314.
[0072] One or more guides may be defined at an interior of adapter
housing 311. The guides, which extend longitudinally along the
interior corners of the axial passage, guide the fiber optic
connector 320 through the port 313, 314. In certain embodiments,
the guides may define ramped entry surfaces to facilitate insertion
of the connector 320 within the adapter passage. One of the end
walls of the adapter housing 311 defines at least one keyway 317
sized and shaped to receive a corresponding key 328 of the SC-type
fiber optic connector 320 (see FIG. 6). In certain implementations,
a keyway 317 is defined in the end wall at both ports 313, 314
(e.g., see FIG. 6).
[0073] In some implementations, flanges may extend outwardly from
the side walls of the adapter housing 311 (see FIG. 3). The flanges
aid in supporting the adapter housing 311 on or against a planar
surface, such as that of a bulkhead. In some implementations, one
or both side walls of the adapter housing 1210 also include a
flexible cantilever arm defining outwardly protruding tabs that are
configured to cooperate with the flanges to capture the adapter
housing 311 against a bulkhead. In other implementations, the side
walls of the adapter housing 311 define solid surfaces. In still
other implementations, recesses may be provided in the side walls
to permit the use of alternative fasteners, such as a flexible
clip.
[0074] The coupler assembly 310 includes one or more media reading
interfaces 318 (see FIG. 6). Each media reading interface 318 is
configured to acquire the physical layer information from the
storage device 330 of a fiber optic connector 320 plugged into the
fiber optic adapter 310. For example, in one implementation, the
adapter housing 310 can hold or retain a media reading interface
318 for each passage. In another implementation, the adapter
housing 310 can hold or retain a media reading interface 318 for
each port 313, 314 of each passage. For example, the adapter 310
shown in FIG. 6 includes a first media reading interface 318
associated with the front port 313 of the passage and a second
media reading interface 318 associated with the rear port of the
passage. In still other implementations, the adapter housing 310
can include a media reading interface 318 associated with each set
of passages that accommodate a duplex connector arrangement 310. In
other implementations, the adapter housing 310 can include any
desired combination of front and rear media reading interfaces
318.
[0075] In certain implementations, the orientation of the first
media reading interface 318 is flipped 180.degree. from the
orientation of the second media reading interface 318. In some
implementations, the first media reading interface 318 is laterally
offset from the second media reading interface 318. For example,
the first and second media reading interfaces 318 may be positioned
side-by-side. In other implementations, the first and second media
reading interfaces 318 may be axially aligned. In some
implementations, the first and second media reading interfaces 318
may be laterally aligned. In other implementations, the first media
reading interfaces 318 may be offset towards the front of the
adapter housing 310 and the second media reading interface 318 may
be offset towards the rear of the adapter housing 310.
[0076] In general, each media reading interface 318 is formed from
one or more contact members 340 (FIG. 9). In some implementations,
the media reading interface 318 includes at least a first contact
member 340 that transfers power, at least a second contact member
340 that transfers data, and at least a third contact member 340
that provides grounding. In one implementation, the media reading
interface 318 includes a fourth contact member 340. In other
implementations, the media reading interface 318 include greater or
fewer contact members 340.
[0077] In some implementations, the cover 315 defines slots 316
configured to receive one or more contact members 340. At least a
portion of each slot 316 extends through the cover 315 to the axial
passage of the adapter housing 311. In some implementations, the
entirety of each slot 316 extends through the cover 315 from top to
bottom. In other implementations, only portions of the slot 316
extend from the top to the bottom of the cover 315. For example,
each slot 316 may define a recess in the top surface of the cover
315 in which the contact members can be positioned. Openings
defined in a bottom of the cover 315 enable portions of the contact
members 340 to extend into a respective adapter passageway.
[0078] The media reading interfaces 318 are positioned in the slots
316 of the cover 315 to connect a storage device 330 of a connector
3210 received at the adapter housing 310 with a circuit board
coupled to the adapter housing 310. For example, a circuit board
may be secured (e.g., via fasteners) to the adapter housing 310 so
as to extend over the slots 316 of the cover 315. Each media
reading interface 318 held by the cover 315 extends between the
circuit board and a respective axial passage of the adapter housing
310. Portions of each contact member 340 engage tracings and
contacts on the circuit board. Other portions of the contact
members 340 engage the electrical contacts 332 of the storage
members 330 attached to any connector 320 plugged into the adapter
housing 310. The circuit board electrically connects to a data
processor and/or to a network interface (e.g., the processor 217
and network interface 216 of FIG. 1). It is further to be
understood that multiple adapter housings 310 can be connected to
the printed circuit board within a connector assembly (e.g., a
bladed panel). A processor coupled to the circuit board can access
the memory 333 of each connector arrangement 320 coupled to the
adapter housing 310 through corresponding ones of the contact
members 340, 332.
[0079] In certain implementations, the slots 316 of the cover 315
are sized to hold individual contacts 340. The adapter housing 311
has internal structure that holds the contacts 340 in the slots
316. The slots 316 position the contact members 340 in alignment
with the contact pads 332 of a connector storage device 330 mounted
to a connector 320 received at the adapter housing 310. The slots
316 may be separated by intermediate walls to inhibit touching
between adjacent contact members 340. In other implementations, all
of the contact members 340 in a single media reading interface 318
may be retained in a single slot 316. In certain implementations,
the slots 316 are sized to accommodate multiple contact members 340
mounted to a support body.
[0080] In some implementations, the contact members 340 of a single
media reading interface 318 are positioned in a staggered
configuration. For example, alternating ones of the contact members
340 are moved axially forward or axially rearward. In some
implementations, the slots 316 accommodating the staggered contact
members 340 also are staggered (e.g., in a front to rear
direction). In other implementations, however, the slots 316 may
have a common length. In still other implementations, the front and
rear ends of the contact members 340 of a single media reading
interface 318 are transversely aligned within similarly
transversely aligned slots 316.
[0081] In some implementations, the cover 315 is sufficiently thick
to enable the media reading interface contacts 340 to be
substantially positioned in the cover 315. In some implementations,
the material height of the cover 315 is at least 0.76 mm (0.03
inches). Indeed, in some implementations, the material height of
the cover 315 is at least 1.02 mm (0.04 inches). In certain
implementations, the material height of the cover 315 is at least
1.27 mm (0.05 inches). In some implementations, a height H1 (FIG.
27) of the adapter housing 310 is at least 9.4 mm. In certain
implementations, the height H1 is at least 10 mm. Indeed, in
certain implementations, the height H1 is at least 10 mm. In one
example implementation, the height H1 is about 10.4 mm.
[0082] In other implementations, the slots 316 for accommodating
the media reading interface 318 may be defined in the adapter
housing 311 instead of in the cover 315. In certain
implementations, the slots 316 may be defined in a side wall of the
adapter housing 311 located opposite the cover 315. Alternatively,
certain types of adapters 310 do not include a cover 315. Some such
example implementations include a monolithic adapter housing. Other
such example implementations include two-piece (e.g., front and
rear) housings. In other implementations, the slots 316 may be
defined in two or more side walls of the adapter housing 311.
[0083] One example type of contact member 340 is shown in FIG. 9.
Each contact member 340 includes at least two moveable (e.g.,
flexible) contact sections defining contact surfaces. In certain
implementations, one or more contact members 340 include three
moveable (e.g., flexible) contact sections. The flexibility of the
contact sections provides tolerance for differences in spacing
between the contact member 340 and the adapter printed circuit
board. Certain types of contact members 340 also include at least
one stationary contact having a contact surface. For example, each
contact member 340 may have two stationary contact sections. The
ability of the first contact section to flex relative to the
stationary contact provides tolerance for placement of the contact
member 340 relative to the circuit board.
[0084] When the contact member 340 is mounted to the adapter 310,
the first moveable contact section and the stationary contact
sections extend through the adapter slot 316 to engage the adapter
circuit board. The second moveable contact section is configured to
extend into the axial passage of the adapter housing 310 and engage
a connector 320 plugged into one of the ports 313, 314. If a
storage device 330 is installed on the connector 320, then the
second contact surface is configured to engage the contact pads 332
of the storage device 330.
[0085] In certain implementations, the third moveable contact
section selectively extends through the slot 316 and engages the
adapter circuit board. For example, the third contact section may
be configured to engage the circuit board only when a connector 320
is plugged into the port 313, 314 corresponding with the contact
member 340. The third contact section may be resiliently biased to
extend within the adapter housing 310. For example, certain types
of contact members 340 may include a resilient section that
transfers force applied to second moveable contact section to the
third moveable contact section. Accordingly, the resilient section
may transfers a force pushing the second section towards the slot
316 to the third section, thereby pushing the third contact section
through the slot 316 (e.g., toward the circuit board).
[0086] In certain implementations, a circumferential edge of each
contact member 340 defines the contact surface of each contact
section. In some implementations, the edge has a substantially
continuous thickness. In various implementations, the thickness
ranges from about 0.05 inches to about 0.005 inches. In some
implementation, the thickness is less than about 0.012 inches. In
one example implementation, the thickness is about 0.008 inches. In
other implementations, the thickness may vary across the body of
the contact member 340.
[0087] In one implementation, the contact member 340 is formed
monolithically (e.g., from a continuous sheet of metal or other
material). For example, in some implementations, the contact member
340 may be manufactured by cutting a planar sheet of metal or other
material. In other implementations, the contact member 340 may be
manufactured by etching a planar sheet of metal or other material.
In other implementations, the contact member 340 may be
manufactured by laser trimming a planar sheet of metal or other
material. In still other implementations, the contact member 340
may be manufactured by stamping a planar sheet of metal or other
material. In still other implementations, the contact member 340
may be formed from wire stock.
[0088] The contact member 340 shown and described herein is formed
from a single piece. In other implementations, however, two or more
separate pieces may operate together to perform the functions of
the contact member 340. For example, a first piece may form the
first moveable contact section and a second piece may form the
third moveable contact section. Either of the pieces may form the
second moveable contact section. Insertion of a connector 320 into
a respective port of the adapter housing 310 may push one of the
pieces into electrical contact with the other of the pieces to
electrically connect the first and second contact sections.
[0089] When a connector 320 is fully inserted into the adapter
housing 310 at one of the ports 313, 314, the connector ferrule 323
is received within one end of the ferrule sleeve 319 inside the
adapter housing 310. In some implementations, the connector 320 may
be releasably locked to the housing 310. For example, flexible
latching hooks disposed within the interior of the housing 310 may
engage the slots 329 defined in the outer body 321 of the connector
320 to releasably hold the connector 320 at the adapter port 313,
314. When the connector 320 includes a storage device 330, the
contacts 332 of the storage device 330 are configured to align with
the slots 316 defined in the adapter housing 310. Accordingly, the
media reading interface contact members 340 held within the slots
316 align with the contacts 332 of the connector storage device 330
to establish an electrical connection between the storage device
330 and the adapter circuit board.
[0090] In accordance with some aspects, each media reading
interface 318 of the adapter 310 is configured to detect the
presence of a connector arrangement 320 plugged into a port 313,
314 of the adapter housing 310. For example, the contact members
340 of a media reading interface 318 can function as presence
detection sensors or trigger switches. In some implementations, the
contact members 340 of a media reading interface 318 are configured
to form a complete circuit with the adapter circuit board only when
a connector 320 is plugged into a respective port 313, 314. For
example, each contact member 340 may contact the circuit board only
after being pushed toward the circuit board by a connector 320
received at the adapter 310. In other example implementations, the
connector 320 may push the contact members 340 away from the
circuit board or from a shorting rod. In accordance with other
aspects, however, certain types of contact members 340 may form a
complete circuit with the circuit board regardless of whether a
connector 320 is received at the adapter 310.
[0091] As discussed above, a processor (e.g., processor 217 of FIG.
2) or other such equipment also can be electrically coupled to the
printed circuit board. Accordingly, the processor can communicate
with the memory circuitry 333 on the connector storage device 330
via the contact members 340 and the printed circuit board. In
accordance with some aspects, the processor is configured to obtain
physical layer information from the connector storage device 330.
In accordance with other aspects, the processor is configured to
write physical layer information to the connector storage device
330. In accordance with other aspects, the processor is configured
to delete physical layer information from the connector storage
device 330. In still other implementations, the processor detects
the presence or absence of a connector 320 at each port 313,
314.
[0092] When removing the fiber optic connector 320, the slidable
outer body 321 of the connector 320 is slid axially relative to the
inner body 322 away from the adapter housing 310 until the flexible
latching hooks of the adapter housing 310 are released from the
slots 329 defined on the outer body 321 of the connector 320. When
released, the connector 320 may be slide rearwardly through the
port 313, 314 to remove the connector 320 from the adapter housing
310.
[0093] Removing the connector 320 from the port 313, 314 releases
the second moveable contact portion of the contact member 340,
thereby allowing the third moveable contact portion to move back to
the initial position. Dropping the third moveable contact portion
disengages the third contact surface from the circuit board,
thereby interrupting the circuit created by the contact member 340.
Interrupting the circuit enables a processor connected to the
circuit board to determine that the connector 320 has been removed
from the port 313, 314. In some implementations, the storage device
330 is not moved out of alignment with the media reading interface
318 until the connector 320 is released. In other implementations,
however, moving the outer body 321 rearwardly applies sufficient
force to the inner body 322 to move the storage device 330 out of
alignment with the media reading interface 318.
[0094] FIGS. 10 and 11 illustrate another example implementation of
a connector system 400 (FIG. 11) that can be utilized on a
connector assembly (e.g., a communications panel) having PLI
functionality as well as PLM functionality. The connector system
400 includes at least one example optical adapter 410 and at least
two optical connector arrangements 420. The optical connector 420
shown is an SC-type optical connector having an outer body 421 that
is axially moveable relative to an inner body 422. The inner body
422 holds a ferrule 423 through which at least one optical fiber
extends. The optical connector 420 shown in FIGS. 10-12 is
substantially the same as the optical connector 320 disclosed
above, except for certain features discussed below.
[0095] As shown in FIGS. 10 and 11, a storage device 430 is coupled
to the connector 420 at a recessed portion 426 of the inner body
422. However, the location on the inner body 422 at which the
storage device 430 is disposed is rearwardly offset compared to the
location of the storage device 330 on the inner body 322 of the
optical connector 320 disclosed above. For example, a front edge of
the storage device 430 is rearwardly offset from the front edge of
the inner body 422. In certain implementations, the recess does not
extend sufficiently forward to open through the front edge of the
inner body 422.
[0096] The optical adapter 410 shown in FIG. 11 is substantially
the same as the optical adapter 310 disclosed above, except for
certain features discussed below. The axial positioning of the
storage device 330, 430 on the inner body 322, 422 of the connector
320, 420 determines or is influenced by the axial positioning of
the media reading interfaces 318 in the adapter 310, 410.
Accordingly, the slots 416 defined in the adapter 410 shown in FIG.
11 are spaced farther apart in the axial direction as compared to
the slots 316 of the adapter 320 shown in FIG. 3.
[0097] FIG. 12 illustrates another example storage device 450
disposed on the optical connector 420 of FIG. 10. The storage
device 450 is offset rearwardly from a front of the inner body 422
of the connector 420. In the example shown, the storage device 450
includes contacts 452 disposed on one side of a printed circuit
board 451. In certain implementations, the memory (e.g., EEPROM) is
disposed at an opposite side of the circuit board 451. In other
implementations, the memory can be disposed on the same side of the
circuit board 451 as the contacts 452.
[0098] In certain implementations, the contacts 452 are uniformly
disposed on the board 451. In the example shown in FIG. 12,
however, two of the contacts are shorter than another two of the
contacts. Also in the example shown, two of the contacts are
L-shaped and two of the contacts extend in a straight line. In
other implementations, however, other types of contacts 452 may be
disposed on the circuit board 451. For example, square contacts may
be arranged in a grid pattern.
[0099] The embodiments described above make use of a contact-based
interface for reading from and/or writing information to a storage
device 330 attached to the connector 320, 420. In accordance with
other aspects of the disclosure, however, contact-less or wireless
interfaces also can be used with the optical systems described
above. In some such alternative embodiments, RFID technology is
used. In one such RFID embodiment, the storage device 330, 430
attached to the connector 320, 420 is implemented as an RFID tag.
In such an embodiment, the storage device 330 does not include an
EEPROM 333 and contacts 332. Rather, the RFID tag includes memory
and an antenna.
[0100] Also, in such an embodiment, the adapter contacts 340 of the
media reading interfaces 318, 418 are replaced with an RFID coil or
antenna. The RFID coils in the adapter ports are connected to one
or more RFID readers (using a suitable multiplexing mechanism if
needed). In order to read information from an RFID tag, the RFID
reader outputs an RF interrogation signal via the RFID coil
associated with the appropriate adapter port. For example, the RFID
reader may output such an RF interrogation signal in response to an
optical connector 320, 420 being inserted into the adapter port
313, 314, 413, 414.
[0101] The RFID tag on the optical connector receives the RFID
interrogation signal, which causes the RFID tag to power on, to
retrieve information (e.g., physical layer information) stored in
the RFID tag, and to transmit the read information. The
transmission from the RFID tag is received by the RFID reader using
the RFID coil in the adapter port. The information included in such
transmissions can be provided to a controller included in the patch
panel or other optical system associated with the adapter 310, 410.
The information also can be communicated to the aggregation point
220 in an IP network 218 as described above. Other contact-less or
wireless embodiments can be implemented in other ways.
[0102] FIGS. 13-15 illustrate another example optical connector 500
having a storage device 525. The optical connector 500 has a front
501, a rear 502, a first side 503, a second side 504, a top 505,
and a bottom 506. The connector 500 includes an outer body 510
defining grip surfaces 514 and a connection mechanism 516. For
example, a grip surface 514 and a connection component can be
formed on each side 503, 504 of the outer body 510. An inner body
is configured to move (e.g., slide) relative to the outer body 510.
An optical fiber tip is held at the inner body and accessible from
the front 501 of the connector 500 (e.g., via a ferrule). In the
example shown, a dust cap 515 covers the optical fiber tip. A
strain-relief boot 518 can extend rearwardly from the outer body
510.
[0103] In some implementations, the storage device 525 is disposed
internally within the connector body 510. For example, the
connector body 510 can define a storage compartment 520 to hold the
storage device 525. As shown in FIG. 14, the storage compartment
520 includes a cavity 521 extending into the connector body 510
from the front 501. In an example, the cavity 521 is defined in the
connector body 510 between the top 505 of the body 510 and the
internal passage in which the optical fiber is disposed. The
connector body 510 forms shelves 522 that partially define the
cavity 521. A notch 523 can be provided in the connector body 510
at the front 501 to be continuous with the cavity 521.
[0104] In certain implementations, the shelves 522 are separated by
a gap 524 (see FIG. 15). The inner body also defines a gap 519. The
gaps 519, 524 provide sufficient room to inhibit interference
between the shelves 522 and other components. In some
implementations, the gaps 519, 524 enable components within an
optical adapter to fit with the connector 500. For example, in
certain implementations, the gaps 519, 524 provide sufficient room
for a split sleeve or other structure disposed within an optical
adapter to surround the optical tip of the connector 500 when the
connector 500 is received at a port of the optical adapter. In
other implementations, the gaps 519, 524 provide sufficient room
for a dust cap to be mounted over the optical tip.
[0105] The storage device 525 is configured to be advanced into the
cavity 521 from the front 501 of the connector 500 (see FIG. 14).
For example, the storage device 525 can be slid edge-wise into the
cavity 521 along the shelves 522. A plug piece 526 can be coupled
to the connector body 510 to close the storage device 525 within
the cavity 521. For example, the plug piece 526 can be welded,
glued, overmolded, or otherwise secured to the body 510. The plug
piece 526 includes a front member 527 that extends across the
opening to the cavity 521, two arms 528 extending rearwardly from
the front member 527, and a lug 529 that extends outwardly from the
front member 527. The arms 528 are sized and configured to slide
into the cavity 521 on opposite sides of the storage device 525.
The lug 529 is sized and configured to fit within the notch 523. In
an example, the storage device 525 can be glued into position
within the cavity 525. In another example, the storage device 525
can be held into position using a vacuum until the plug piece 526
is added.
[0106] In some implementations, the storage device 525 includes an
RFID tag. In such implementations, the storage device 525 can be
fully sealed within the connector body 510. In other
implementations, the storage device 525 includes a circuit board
including memory and contact pads. In such implementations,
openings are defined in the top 505 of the connector body 500 to
provide access to the contact pads.
[0107] In other implementations, a cavity can be defined in the top
surface 505 of the connector body 510. The storage device 525 can
be disposed within the cavity. A cover can be added to close the
cavity. In an example, the storage device 525 can be glued into
position within the cavity. In another example, the storage device
525 can be held into position using a vacuum until a cover is
added. For example, the cavity section of the connector body 510
and storage device 525 can be overmolded (e.g., using injection
molded plastic) to close the cavity. In certain implementations,
the storage device 525 includes an RFID tag that can be sealed
within the cavity by the cover. In other implementations, the
storage device 525 can include a circuit board including memory and
contact pads. In such implementations, the contact pads are left
accessible through the cover. For example, the contact pads can be
pressed against the mold during an overmolding process to prevent
the contact pads from being overmolded.
[0108] FIGS. 16 and 17 illustrate various example LC connectors
600, 650 having rear slots sized and configured to hold a storage
device (e.g., an RFID tag, a circuit board and EEPROM, etc.). For
example, the LC connector 600 includes a single-piece body 610
including a latch 615 for securing the connector 600 to an adapter.
The body 610 also includes a trigger 616 to facilitate depression
of the latch 615. A distal tip of an optical fiber protrudes from a
front of the body 610 and an optical cable extends from a rear of
the body 610. A strain-relief boot can be mounted to the rear of
the body 610. The body 610 defines a slot 620 leading to a cavity
defined in the body 610 of the connector 600. In an example, the
cavity opens into a longitudinal bore extending through the
connector body 610. In another example, the cavity is separate from
the bore. A storage device can be inserted edge-wise within the
cavity and the slot 620 can be closed. In an example, the slot 620
can be overmolded shut. In another example, a plug can be inserted
into the slot 620. In another example, the boot can cover the slot
620.
[0109] FIG. 17 shows an LC connector 650 having a two-piece housing
including a front housing piece 652 and a rear housing piece 654.
The front housing piece 652 includes a latch 665 and the rear
housing piece 654 includes a trigger 666. In some implementations,
a slot (e.g., slot 620) can be defined in the rear housing piece
654. The slot leads to a cavity in the rear housing piece 654. The
storage device can be inserted edge-wise within the cavity and the
slot can be sealed to close the storage device within the cavity.
In an example, the slot can be overmolded shut. In another example,
a plug can be inserted into the slot. In another example, the boot
can cover the slot.
[0110] The above specification, examples and data provide a
complete description of the manufacture and use of the composition
of the invention. Since many implementations can be made without
departing from the spirit and scope of the invention, the invention
resides in the claims hereinafter appended.
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